Home › Authors › Hansen, Don A., Walter E. Heinrichs, Jr., Ralph C. Holmer and others (Editors) a 👤 Hansen, Don A., Walter E. Heinrichs, Jr., Ralph C. Holmer and others (Editors) a 1 book Books by Hansen, Don A., Walter E. Heinrichs, Jr., Ralph C. Holmer and others (Editors) a Society of Exploration Geophys Society of Exploration Geophysicists' Mining Geophysics. Volume I. Case Histories. 1966